<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!-- 
	Copyright (C) 2007, 2008, 2009, 2010, 2011. PARP Research Group.
	<http://perception.inf.um.es>
	University of Murcia, Spain.

	This file is part of the QVision library.

	QVision is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as
	published by the Free Software Foundation, version 3 of the License.

	QVision is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public
	License along with QVision. If not, see <http://www.gnu.org/licenses/>.
-->

<html><head><meta http-equiv="content-Type" content="text/html;charset=UTF-8">
<title>QVision: Qt&#39;s Image, Video and Computer Vision Library</title>
<meta name="title" content="QVision" />
<meta name="dc.title" content="QVision" />
<meta name="url" content="http://perception.inf.um.es/QVision" />
<meta name="author" content="PARP Research Group - http://perception.inf.um.es" />
<meta name="revisit-after" content="30 DAYS"/>
<meta name="robots" content="index,follow"/>
<meta name="classification" content="*">
<meta name="rating" content="Safe For Kids">
<meta name="distribution" content="GLOBAL"/>
<meta name="description" content="Qt's Image, Video and Computer Vision Library"/>
<meta name="page-topic" content="Computer Vision research and prototype programming"/>
<meta name="geo.country" content="ES" />

<!--
Keywords:
By license:		open source, gnu, lgpl, gpl, free
By theme:		computer vision, image processing, robotics, programming, source, development
By usage:		library, toolkit, framework, prototype, application
By programming specs:	object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping
Interoperability with:	Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack
Functionallity:		image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface
Main data-types:	matrix, vector, tensor, quaternion, image, polyline
Video sources:		webcam, camera, stream
Devices:		embedded, desktop computer, laptop, mini-laptop
Authors:		PARP research group. University of Murcia, Spain.
-->

<meta name="keywords" content="augmented reality, sfm, structure from motion, open source, gnu, lgpl, gpl, free, computer vision, image processing, robotics, programming, source, development, library, toolkit, framework, prototype, application, object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping, Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack, image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface, matrix, vector, tensor, quaternion, image, polyline, webcam, camera, stream, embedded, desktop computer, laptop, mini-laptop, University of Murcia, Spain, PARP research group, vision por computador"/>
<meta http-equiv="keywords" content="augmented reality, sfm, structure from motion, open source, gnu, lgpl, gpl, free, computer vision, image processing, robotics, programming, source, development, library, toolkit, framework, prototype, application, object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping, Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack, image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface, matrix, vector, tensor, quaternion, image, polyline, webcam, camera, stream, embedded, desktop computer, laptop, mini-laptop, University of Murcia, Spain, PARP research group, vision por computador"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="title" content="QVision"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="tabs.css" rel="stylesheet" type="text/css" />
<link rel="shortcut icon" href="favicon.ico" />
</head><body>

<table width="100%"><tr>
	<td><a href="http://perception.inf.um.es/"><img src="parp.png" border="0" /> <big>PARP Research Group</big></a></td>
	<td align="right"><a href="http://www.um.es/"><big>Universidad de Murcia</big> <img src="um.png" border="0" /></a></td>
</tr></table>

<hr /><br />

<table width="95%" align="center"><tr><td>

<!-- Generated by Doxygen 1.6.3 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div class="navigation" id="top">
  <div class="tabs">
    <ul>
      <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
      <li><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="annotated.html"><span>Classes</span></a></li>
      <li class="current"><a href="files.html"><span>Files</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
          <form id="FSearchBox" action="search.php" method="get">
            <img id="MSearchSelect" src="search/search.png" alt=""/>
            <input type="text" id="MSearchField" name="query" value="Search" size="20" accesskey="S" 
                   onfocus="searchBox.OnSearchFieldFocus(true)" 
                   onblur="searchBox.OnSearchFieldFocus(false)"/>
          </form>
        </div>
      </li>
    </ul>
  </div>
  <div class="tabs">
    <ul>
      <li><a href="files.html"><span>File&nbsp;List</span></a></li>
      <li><a href="globals.html"><span>File&nbsp;Members</span></a></li>
    </ul>
  </div>
<h1>src/qvblockprogramming/qvprocessingblocks/qvmserdetector.cpp</h1><a href="qvmserdetector_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *      Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group.</span>
<a name="l00003"></a>00003 <span class="comment"> *      &lt;http://perception.inf.um.es&gt;</span>
<a name="l00004"></a>00004 <span class="comment"> *      University of Murcia, Spain.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> *      This file is part of the QVision library.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> *      QVision is free software: you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> *      it under the terms of the GNU Lesser General Public License as</span>
<a name="l00010"></a>00010 <span class="comment"> *      published by the Free Software Foundation, version 3 of the License.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *      QVision is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *      but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> *      GNU Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *      You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *      License along with QVision. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;qvip.h&gt;</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;QVPolyline&gt;</span>
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;QVMSER&gt;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &lt;QVMSERDetector&gt;</span>
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="preprocessor">#ifndef DOXYGEN_IGNORE_THIS</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="keyword">const</span> <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> QVMSERDetector::negateImage(<span class="keyword">const</span> <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> image)<span class="keyword"> const</span>
<a name="l00033"></a>00033 <span class="keyword">        </span>{
<a name="l00034"></a>00034         <span class="keyword">const</span> uInt rows = image.<a class="code" href="classQVImage.html#a55e71ad628f450ee82bb4226cb62ec17" title="Overloaded function from QVGenericImage::getRows().">getRows</a>(), cols = image.<a class="code" href="classQVImage.html#ad0f2758702ee4d96d538aa353ae81bb7" title="Overloaded function from QVGenericImage::getCols().">getCols</a>();
<a name="l00035"></a>00035         <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> notImage(cols, rows);
<a name="l00036"></a>00036         <span class="keywordflow">for</span> (uInt col = 0; col &lt; cols; col++)
<a name="l00037"></a>00037                 <span class="keywordflow">for</span> (uInt row = 0; row &lt; rows; row++)
<a name="l00038"></a>00038                         notImage(col, row) = 255 - image(col, row);
<a name="l00039"></a>00039 
<a name="l00040"></a>00040         <span class="keywordflow">return</span> notImage;
<a name="l00041"></a>00041         }
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 QVMSERDetector::QVMSERDetector(QString name): <a class="code" href="classQVProcessingBlock.html" title="Base class for Block threads.">QVProcessingBlock</a>(name)
<a name="l00044"></a>00044         {
<a name="l00045"></a>00045         addProperty&lt;int&gt;(<span class="stringliteral">&quot;Delta&quot;</span>, inputFlag, 10, <span class="stringliteral">&quot;MSER parameter, as described in the paper.&quot;</span>, 1, 128);
<a name="l00046"></a>00046         addProperty&lt;int&gt;(<span class="stringliteral">&quot;minAreaMSER&quot;</span>, inputFlag, 10, <span class="stringliteral">&quot;MSER with area lesser than this value are discarted.&quot;</span>, 1, 100*100);
<a name="l00047"></a>00047         addProperty&lt;int&gt;(<span class="stringliteral">&quot;maxAreaMSER&quot;</span>, inputFlag, 10000, <span class="stringliteral">&quot;MSER with area greater than this value are discarted.&quot;</span>, 1, 1000*1000);
<a name="l00048"></a>00048         addProperty&lt;double&gt;(<span class="stringliteral">&quot;diffAreaThreshold&quot;</span>, inputFlag, 0.01, <span class="stringliteral">&quot;Proportion of the difference in areas to be considered different&quot;</span>, 0.0, 1.0);
<a name="l00049"></a>00049         addProperty&lt; QVImage&lt;uChar,3&gt; &gt;(<span class="stringliteral">&quot;Input image&quot;</span>, inputFlag|outputFlag);
<a name="l00050"></a>00050         addProperty&lt; QList&lt;QVPolyline&gt; &gt;(<span class="stringliteral">&quot;MSER contours&quot;</span>, outputFlag);
<a name="l00051"></a>00051         }
<a name="l00052"></a>00052 
<a name="l00053"></a>00053 <span class="keywordtype">void</span> <a class="code" href="classQVMSERDetector.html#a2ef41a5e02f6fe1d9513fdf5cd78fc70" title="Function to be defined in subclasses with processing code.">QVMSERDetector::iterate</a>()
<a name="l00054"></a>00054         {
<a name="l00055"></a>00055         <span class="comment">// 0. Read parameters</span>
<a name="l00056"></a>00056         <span class="keyword">const</span> <span class="keywordtype">int</span> delta = getPropertyValue&lt;int&gt;(<span class="stringliteral">&quot;Delta&quot;</span>),
<a name="l00057"></a>00057                 minArea = getPropertyValue&lt;int&gt;(<span class="stringliteral">&quot;minAreaMSER&quot;</span>),
<a name="l00058"></a>00058                 maxArea = getPropertyValue&lt;int&gt;(<span class="stringliteral">&quot;maxAreaMSER&quot;</span>);
<a name="l00059"></a>00059         <span class="keyword">const</span> <span class="keywordtype">double</span> diffAreaThreshold = getPropertyValue&lt;double&gt;(<span class="stringliteral">&quot;diffAreaThreshold&quot;</span>);
<a name="l00060"></a>00060         <span class="keyword">const</span> <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> image = getPropertyValue&lt; QVImage&lt;uChar,3&gt; &gt;(<span class="stringliteral">&quot;Input image&quot;</span>);
<a name="l00061"></a>00061         <span class="keyword">const</span> <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> notImage = negateImage(image);
<a name="l00062"></a>00062 
<a name="l00063"></a>00063         <a class="code" href="classQVProcessingBlock.html#a61f390e8790a77175a6d6e1049a9d127" title="Stablish a performance breakpoint in the execution of the block.">timeFlag</a>(<span class="stringliteral">&quot;Read parameters&quot;</span>);
<a name="l00064"></a>00064 
<a name="l00065"></a>00065         <span class="comment">// 1. Apply MSER</span>
<a name="l00066"></a>00066         QList&lt;QVMSER&gt; MSERListLow, MSERListHigh;
<a name="l00067"></a>00067 
<a name="l00068"></a>00068         <a class="code" href="group__qvip.html#ga9eed952744ef9fc9a8b003c524f680f9" title="This algorithm obtains MSER&amp;#39;s - from an image.This is an implementation of the...">getMSER</a>(image, MSERListLow, delta, minArea, maxArea, diffAreaThreshold);
<a name="l00069"></a>00069         <a class="code" href="classQVProcessingBlock.html#a61f390e8790a77175a6d6e1049a9d127" title="Stablish a performance breakpoint in the execution of the block.">timeFlag</a>(<span class="stringliteral">&quot;MSER Low&quot;</span>);
<a name="l00070"></a>00070 
<a name="l00071"></a>00071         <a class="code" href="group__qvip.html#ga9eed952744ef9fc9a8b003c524f680f9" title="This algorithm obtains MSER&amp;#39;s - from an image.This is an implementation of the...">getMSER</a>(notImage, MSERListHigh, delta, minArea, maxArea, diffAreaThreshold);
<a name="l00072"></a>00072         <a class="code" href="classQVProcessingBlock.html#a61f390e8790a77175a6d6e1049a9d127" title="Stablish a performance breakpoint in the execution of the block.">timeFlag</a>(<span class="stringliteral">&quot;MSER High&quot;</span>);
<a name="l00073"></a>00073 
<a name="l00074"></a>00074         <span class="comment">// 2. Publish resulting MSER&#39;s</span>
<a name="l00075"></a>00075         QList&lt; QVPolyline &gt; polylineMSERList;
<a name="l00076"></a>00076         <a class="code" href="group__qvip.html#ga782538a21f9e2ea0aef216b54cbf0570" title="Obtains border contours for an MSER list, obtained with the function getMSER.">getMSERContours</a>(image, MSERListLow, polylineMSERList);
<a name="l00077"></a>00077 
<a name="l00078"></a>00078         <a class="code" href="group__qvip.html#ga782538a21f9e2ea0aef216b54cbf0570" title="Obtains border contours for an MSER list, obtained with the function getMSER.">getMSERContours</a>(notImage, MSERListHigh, polylineMSERList);
<a name="l00079"></a>00079 
<a name="l00080"></a>00080         setPropertyValue&lt; QList&lt;QVPolyline&gt; &gt;(<span class="stringliteral">&quot;MSER contours&quot;</span>, polylineMSERList);
<a name="l00081"></a>00081         <a class="code" href="classQVProcessingBlock.html#a61f390e8790a77175a6d6e1049a9d127" title="Stablish a performance breakpoint in the execution of the block.">timeFlag</a>(<span class="stringliteral">&quot;Publish resulting images&quot;</span>);
<a name="l00082"></a>00082         }
<a name="l00083"></a>00083 
<a name="l00084"></a>00084 <span class="preprocessor">#endif</span>
</pre></div></div>
</td></tr></table>

<br /><hr><br />
<center><a href="http://perception.inf.um.es/QVision">QVision framework</a>.
<a href="http://perception.inf.um.es">PARP research group</a>.
Copyright &copy; 2007, 2008, 2009, 2010, 2011.</center>
<br />
</body>
</html>
